Universal 50 Pack 5-micron 10-Inch by 2.5-Inch Sediment Filter CartridgesMelt Blown Polypropylene Universal 50 Pack 5 Micron Sediment Filter Cartridges Standard 10" x 2. 5" replacement filters for RO systems and whole house filtration 5 Micron Rating 50 Pack Bulk Value Melt Blown Construction Universal Fit These IPW Industries sediment filters serve as the critical first stage in most reverse osmosis and whole house systems, capturing sand, silt, rust, and particulate before they reach downstream carbon or membrane